From: Geoff Lansberry <geoff@kuvee.com>
To: linux-wireless@vger.kernel.org, sameo@linux.intel.com
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nfc@ml01.01.org, devicetree@vger.kernel.org,
mgreer@animalcreek.com, justin@kuvee.com,
colin.king@canonical.com, wharms@bfs.de,
Geoff Lansberry <geoff@kuvee.com>
Subject: [PATCH v3] NFC: trf7970a: Correct register settings for 27MHz clock
Date: Thu, 27 Apr 2017 10:41:59 -0400 [thread overview]
Message-ID: <1493304119-16605-1-git-send-email-geoff@kuvee.com> (raw)
In prior commits the selected clock frequency does not propagate
correctly to what is written the the TRF7970A_MODULATOR_SYS_CLK_CTRL
register.
Signed-off-by: Geoff Lansberry <geoff@kuvee.com>
---
drivers/nfc/trf7970a.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 6ed5d7e..f7fee7d 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -2067,6 +2067,13 @@ static int trf7970a_probe(struct spi_device *spi)
return -EINVAL;
}
+ if (clk_freq == TRF7970A_27MHZ_CLOCK_FREQUENCY) {
+ trf->modulator_sys_clk_ctrl = TRF7970A_MODULATOR_27MHZ;
+ dev_dbg(trf->dev, "trf7970a configured for 27MHz crystal\n");
+ } else {
+ trf->modulator_sys_clk_ctrl = 0;
+ }
+
ret = devm_request_threaded_irq(trf->dev, spi->irq, NULL,
trf7970a_irq,
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
--
2.7.4
next reply other threads:[~2017-04-27 14:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-27 14:41 Geoff Lansberry [this message]
2017-04-27 17:19 ` [PATCH v3] NFC: trf7970a: Correct register settings for 27MHz clock Mark Greer
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